Dual, 2MSPS, 12-Bit, 3+3 or 2+2 Channel, Simultaneous Sampling Analog-To-Digital SAR Converter - ADS7863

ADS7863 (NRND)

Dual, 2MSPS, 12-Bit, 3+3 or 2+2 Channel, Simultaneous Sampling Analog-To-Digital SAR Converter

 

Not Recommended for New Designs (NRND)

Replaced By ADS7863A– The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.

Description

The ADS7863 is a dual, 12-bit, 2MSPS, analog-to-digital converter (ADC) with four fully differential or six pseudo-differential input channels grouped into two pairs for high-speed, simultaneous signal acquisition. Inputs to the sample-and-hold (S/H) amplifiers are fully differential and are maintained differential to the input of the ADC. This architecture provides excellent common-mode rejection of 72dB at 100kHz, which is a critical performance characteristic in noisy environments.

The ADS7863 is pin-compatible with the ADS7861, but offers additional features such as a programmable reference output, flexible supply voltage (2.7V to 5.5V for AVDD and BVDD), a pseudo-differential input multiplexer with three channels per ADC, and several power-down features.

The ADS7863 is offered in an SSOP-24 and a 4×4mm QFN-24 package. It is specified over the extended operating temperature range of –40°C to +125°C.

Features

  • Four Fully- or Six Pseudo-Differential Inputs
  • SNR: 71dB, THD: –81dB
  • Programmable and Buffered Internal 2.5V Reference
  • Flexible Power-Down Features
  • Variable Power-Supply Ranges: 2.7V to 5.5V
  • Low-Power Operation: 45mW at 5V
  • Operating Temperature Range:
    –40°C to +125°C
  • Pin-Compatible with ADS7861 and ADS8361 (SSOP package)
  • APPLICATIONS
    • Motor Control
    • Multi-Axis Positioning Systems
    • Three-Phase Power Control

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    WEBENCH® Designer ADS7863